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load balancer

Hi ,
 i just wonder what is the disadvantages of persistent load balancing technique? tks a lot.
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BeginToLearn
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BeginToLearn
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Patmac951Commented:
Can you possibly give a little more details? What device are you using to load balance?  Usually WAN sided  load balancing is configured on a firewall/router that has two separate WAN ports from separate ISP's where the router will determine by network bandwidth what inbound and outbound traffic should be sent to which WAN address.  In WAN load balancing it is also used as a failover in the case one of the ISP circuits goes down all traffic will be passed to the other WAN IP.

Then via managed LAN switches you can have internal network traffic that is load balanced specific to your network.  I am not sure what type of load balance you are referring to.   I can't think of a situation where load balancing would be a bad thing, it just depends on how you are attempting to use it.
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BeginToLearnAuthor Commented:
I don't use any device. I am just doing research about it as the technique to implement network load balancer. . I can find it advantages easily, but disadvantages are hard. Maybe server down but the cache still keep it as active ...
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BrianCommented:
Unless you give too little bandwidth to this critcal service, or that service. When setup correctly there should not be any disadvantages.
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BeginToLearnAuthor Commented:
last night, i wrote this on my research

Disadvantages: This technique has a problem with automatic failover in which a down or inactive server will cause information of per-session becomes disappeared and inaccessible. Consequently, any session depend on it will be lost.  

I mean compare to other technique in load balancing  with the same other factors, what are the drawbacks of the technique ? tks.  
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